Error Occured while connecting to db, check your db settings...
This is mostly caused by wrong ehcp password in config.php
if you just installed ehcp, then learn/know your ehcp root password, then re-install ehcp..
you may also try troubleshoot page or Additional mysql troubleshooter... or www.ehcp.net/?q=node/245Access denied for user 'bvidinli'@'localhost' (using password: YES)